Mitsubishi Galant (2004+). Manual — part 479
DIAGNOSIS
TSB Revision
CONTROLLER AREA NETWORK (CAN)
54C-527
(4) Measure the resistance between ABS-ECU connector
terminal 23 and powertrain control module connector
terminal 18.
OK: 2 ohms or less
(5) Measure the resistance between ABS-ECU connector
terminal 24 and powertrain control module connector
terminal 17.
OK: 2 ohms or less
CAUTION
Strictly observe the specified wiring harness repair proce-
dure. For details refer to
Q: Do all the resistances measure 2 ohms or less?
YES : If all the resistances measure 2 ohms or less, go to
Step 23.
NO : If either of the resistances measures more than 2
ohms or all the resistances measure more than 2
ohms, repair the wiring harness between ABS-ECU
connector and the powertrain control module
connector.
AC204582
HARNESS SIDE: A-02
HARNESS SIDE: B-19
TEST
HARNESS
TEST
HARNESS
3
17
10
13
18
4
11
14
7
16 15
1
2
5
12
9
6
8
JAE
19
18
2
1
25
8
15
16
17
27
28
26
11
9
10
12
13
14
23
24
22 21
7
6
5
4
20
3
CU
AC204582
3
17
10
13
18
4
11
14
7
16 15
1
2
5
12
9
6
8
JAE
19
18
2
1
25
8
15
16
17
27
28
26
11
9
10
12
13
14
23
24
22 21
7
6
5
4
20
3
HARNESS SIDE: A-02
HARNESS SIDE: B-19
TEST
HARNESS
TEST
HARNESS
CT
DIAGNOSIS
TSB Revision
CONTROLLER AREA NETWORK (CAN)
54C-528
STEP 23. Check the CAN bus lines inside the ABS-ECU.
Measure the resistance at ABS-ECU connector A-02.
CAUTION
A digital multimeter should be used. For details refer to
CAUTION
The test wiring harness should be used. For details refer to
(1) Disconnect ABS-ECU connector A-02, and measure the
resistance at the component side of ABS-ECU connector
A-02.
(2) Turn the ignition switch to the "LOCK" (OFF) position.
CAUTION
Disconnect the negative battery terminal. For details refer
to
.
(3) Disconnect the negative battery terminal.
(4) Measure the resistance between ABS-ECU connector
terminals 7 and 23.
OK: 2 ohms or less
(5) Measure the resistance between ABS-ECU connector
terminals 24 and 25.
OK: 2 ohms or less
CAUTION
Strictly observe the specified wiring harness repair proce-
dure. For details refer to
Q: Do all the resistances measure 2 ohms or less?
YES : If all the resistances measure 2 ohms or less, power
supply to the powertrain control module may be
suspected. Diagnose the engine. Refer to GROUP
13A, MFI diagnosis
<2.4L engine> or
GROUP 13B, MFI diagnosis
engine>.
NO : If either of the resistances measures more than 2
ohms or all the resistances measure more than 2
ohms, replace the ABS-ECU.
AC305206
CONNECTOR: A-02
AG
A-02 (GR)
HARNESS SIDE
AC209438
COMPONENT SIDE: A-02
TEST
HARNESS
AC
TEST
HARNESS
AC209438
COMPONENT SIDE: A-02
AD
TEST
HARNESS
TEST
HARNESS
DIAGNOSIS
TSB Revision
CONTROLLER AREA NETWORK (CAN)
54C-529
STEP 24. Using scan tool MB991958, diagnose the CAN
bus line (Disconnect ABS-ECU connector A-02, and check
the ABS-ECU system).
(1) Disconnect ABS-ECU connector A-02.
(2) Turn the ignition switch to the "ON" position.
(3) Diagnose CAN bus lines, and check if the MUT-III screen is
as shown in the illustration.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
(5) Check ABS-ECU connector A-02.
Q: Does the MUT-III screen correspond to the illustration?
YES : If the MUT-III screen corresponds to the illustration,
go to Step 25 .
NO : If the MUT-III screen does not correspond to the
illustration, refer to diagnostics item 8: Check the
CAN_L and H lines for a short circuit (Refer to
AC305206
CONNECTOR: A-02
AG
A-02 (GR)
HARNESS SIDE
AC306074
: Red section on screen
PCM
METER
-ECU
ABS-ECU
AB
MUT
ETACS
-ECU
AC-ECU
SRS-ECU
J/C
DIAGNOSIS
TSB Revision
CONTROLLER AREA NETWORK (CAN)
54C-530
STEP 25. Check the CAN bus lines between intermediate
connector C-29 and the ABS-ECU. Measure the resistance
between intermediate connector C-29 and ABS-ECU
connector A-02.
CAUTION
A digital multimeter should be used. For details refer to
CAUTION
The test wiring harness should be used. For details refer to
(1) Disconnect intermediate connector C-29 and ABS-ECU
connector A-02, and measure the resistance between the
wiring harness side connector of ABS-ECU connector A-02
and the male side connector of intermediate connector
C-29 (at front wiring harness side).
(2) Turn the ignition switch to the "LOCK" (OFF) position.
CAUTION
Disconnect the negative battery terminal. For details refer
to
.
(3) Disconnect the negative battery terminal.
AC305206
CONNECTOR: A-02
AG
A-02 (GR)
HARNESS SIDE
AC305231AI
CONNECTOR: C-29
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